./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt2.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:10:04,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:10:04,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:10:04,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:10:04,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:10:04,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:10:04,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:10:04,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:10:04,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:10:04,381 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:10:04,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:10:04,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:10:04,383 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:10:04,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:10:04,386 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:10:04,386 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:10:04,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:10:04,387 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:10:04,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:10:04,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:10:04,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:10:04,388 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:10:04,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:10:04,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:10:04,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:10:04,389 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:10:04,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:10:04,389 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:10:04,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:10:04,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:10:04,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:10:04,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:10:04,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:10:04,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:10:04,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:10:04,391 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:10:04,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:10:04,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:10:04,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:10:04,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:10:04,392 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:10:04,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:10:04,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:10:04,393 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:10:04,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:10:04,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:10:04,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:10:04,615 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:10:04,616 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:10:04,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-buffer-mult-alt2.wvr.yml/witness.yml [2024-01-31 16:10:04,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:10:04,765 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:10:04,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-01-31 16:10:05,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:10:06,073 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:10:06,074 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2024-01-31 16:10:06,083 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aeb2b2b9/3bc15fc3d5eb46ad8849c48b185f8ad7/FLAGb84bed6f2 [2024-01-31 16:10:06,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aeb2b2b9/3bc15fc3d5eb46ad8849c48b185f8ad7 [2024-01-31 16:10:06,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:10:06,099 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:10:06,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:10:06,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:10:06,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:10:06,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:10:04" (1/2) ... [2024-01-31 16:10:06,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2989137f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:10:06, skipping insertion in model container [2024-01-31 16:10:06,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:10:04" (1/2) ... [2024-01-31 16:10:06,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d9d44f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:10:06, skipping insertion in model container [2024-01-31 16:10:06,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:10:06" (2/2) ... [2024-01-31 16:10:06,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2989137f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06, skipping insertion in model container [2024-01-31 16:10:06,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:10:06" (2/2) ... [2024-01-31 16:10:06,109 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:10:06,210 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:10:06,211 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (((0 <= i) && (0 <= j)) && (0 <= q2_back)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,211 INFO L98 nessWitnessExtractor]: Location invariant before [L123-L123] ((((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (N == 0)) && (M == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,211 INFO L98 nessWitnessExtractor]: Location invariant before [L129-L129] (((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (((0 <= i) && (0 <= j)) && (0 <= q1_front)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L167-L167] (((0 <= i) && (0 <= j)) && (b <= -1)) && (b != 0) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L110-L110] (((-2147483647 <= q2_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L124-L124] (((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (N == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,212 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L136-L136] ((i == 0) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L137-L137] ((((-2147483647 <= N) && (M <= 2147483646)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,213 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,214 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,214 INFO L98 nessWitnessExtractor]: Location invariant before [L126-L126] ((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,214 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,214 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L116-L116] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (((-2147483647 <= q1_front) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L112-L112] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L72-L72] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L128-L128] ((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L106-L106] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,215 INFO L98 nessWitnessExtractor]: Location invariant before [L131-L131] ((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,216 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (((0 <= i) && (0 <= j)) && (0 <= q1_back)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,216 INFO L98 nessWitnessExtractor]: Location invariant before [L157-L157] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,216 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,216 INFO L98 nessWitnessExtractor]: Location invariant before [L168-L168] (0 <= i) && (0 <= j) [2024-01-31 16:10:06,216 INFO L98 nessWitnessExtractor]: Loop invariant at [L160-L160] ((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && ((size != 0 && ((((((((8 <= size && 8 <= i) || (7 <= size && i == 7)) || (6 <= size && i == 6)) || (5 <= size && i == 5)) || (4 <= size && i == 4)) || (3 <= size && i == 3)) || (2 <= size && i == 2)) || (1 <= size && i == 1))) || (0 == i && i == 0)) [2024-01-31 16:10:06,217 INFO L98 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,217 INFO L98 nessWitnessExtractor]: Location invariant before [L108-L108] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant before [L134-L134] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant after [L49-L49] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant before [L163-L163] ((((0 <= i) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,218 INFO L98 nessWitnessExtractor]: Location invariant before [L113-L113] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,219 INFO L98 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,219 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L51] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,219 INFO L98 nessWitnessExtractor]: Loop invariant at [L87-L87] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,219 INFO L98 nessWitnessExtractor]: Location invariant before [L109-L109] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,219 INFO L98 nessWitnessExtractor]: Location invariant before [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,219 INFO L98 nessWitnessExtractor]: Location invariant before [L132-L132] (((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (n2 == 0) [2024-01-31 16:10:06,220 INFO L98 nessWitnessExtractor]: Location invariant before [L133-L133] ((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,220 INFO L98 nessWitnessExtractor]: Location invariant after [L85-L85] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,220 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (((-2147483647 <= q1_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,220 INFO L98 nessWitnessExtractor]: Location invariant before [L140-L140] ((i == 0) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,221 INFO L98 nessWitnessExtractor]: Location invariant before [L159-L159] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,221 INFO L98 nessWitnessExtractor]: Loop invariant at [L105-L105] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,221 INFO L98 nessWitnessExtractor]: Location invariant before [L156-L156] (((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L127-L127] (((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L107-L107] (((0 <= i) && (0 <= j)) && (0 <= q2_front)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant after [L67-L67] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (((-2147483647 <= q2_back) && (0 <= i)) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,222 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (((-2147483647 <= q2_back) && (0 <= i)) && (1 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Location invariant after [L103-L103] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Location invariant before [L161-L161] (((((q2 == 0) && (i == 0)) && (j == 0)) && (total == 0)) && (size != 0)) && ((((((((((8 <= i && 9 <= size) && i <= 2147483646) || (8 <= size && i == 7)) || (7 <= size && i == 6)) || (6 <= size && i == 5)) || (5 <= size && i == 4)) || (4 <= size && i == 3)) || (3 <= size && i == 2)) || (2 <= size && i == 1)) || ((1 <= size && 0 == i) && i == 0)) [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Loop invariant at [L69-L69] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,223 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (((-2147483647 <= q1_back) && (0 <= j)) && (1 <= i)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,224 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] ((0 <= i) && (0 <= j)) && ((unsigned long )_argptr == 0UL) [2024-01-31 16:10:06,224 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,224 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,224 INFO L98 nessWitnessExtractor]: Location invariant before [L169-L169] (0 <= i) && (0 <= j) [2024-01-31 16:10:06,224 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-31 16:10:06,224 INFO L98 nessWitnessExtractor]: Location invariant before [L122-L122] (((((((((((((q1 == 0) && (q2 == 0)) && (i == 0)) && (j == 0)) && (total == 0)) && (C == 0)) && (N == 0)) && (M == 0)) && (q1_front == 0)) && (q1_back == 0)) && (q2_front == 0)) && (q2_back == 0)) && (n1 == 0)) && (n2 == 0) [2024-01-31 16:10:06,249 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:10:06,440 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4226,4239] [2024-01-31 16:10:06,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:10:06,461 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:10:06,493 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:10:06,494 WARN L424 MainDispatcher]: Unable to annotate cond = i < N with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:10:06,515 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:10:06,516 WARN L424 MainDispatcher]: Unable to annotate cond = j < M with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:10:06,531 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:10:06,531 WARN L424 MainDispatcher]: Unable to annotate cond = i < N || q1_front < q1_back with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:10:06,541 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-01-31 16:10:06,541 WARN L424 MainDispatcher]: Unable to annotate cond = j < M || q2_front < q2_back with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:10:06,557 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c[4226,4239] Start Parsing Local Start Parsing Local [2024-01-31 16:10:06,558 WARN L424 MainDispatcher]: Unable to annotate * arr = (int*)malloc(sizeof(int) * (size_t)size) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:10:06,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:10:06,574 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:10:06,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06 WrapperNode [2024-01-31 16:10:06,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:10:06,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:10:06,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:10:06,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:10:06,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,647 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 409 [2024-01-31 16:10:06,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:10:06,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:10:06,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:10:06,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:10:06,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,692 INFO L175 MemorySlicer]: Split 16 memory accesses to 6 slices as follows [2, 2, 6, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 1, 1, 1]. [2024-01-31 16:10:06,697 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,697 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,711 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:10:06,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:10:06,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:10:06,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:10:06,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (1/1) ... [2024-01-31 16:10:06,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:10:06,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:10:06,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:10:06,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:10:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:10:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:10:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:10:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:10:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:10:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:10:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:10:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:10:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:10:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:10:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:10:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:10:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:10:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:10:06,812 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:10:06,952 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:10:06,954 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:10:07,609 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:10:07,609 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:10:08,005 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:10:08,006 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:10:08,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:10:08 BoogieIcfgContainer [2024-01-31 16:10:08,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:10:08,010 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:10:08,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:10:08,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:10:08,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:10:04" (1/4) ... [2024-01-31 16:10:08,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6c34b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:10:08, skipping insertion in model container [2024-01-31 16:10:08,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:10:06" (2/4) ... [2024-01-31 16:10:08,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6c34b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:10:08, skipping insertion in model container [2024-01-31 16:10:08,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:10:06" (3/4) ... [2024-01-31 16:10:08,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6c34b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:10:08, skipping insertion in model container [2024-01-31 16:10:08,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:10:08" (4/4) ... [2024-01-31 16:10:08,015 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2024-01-31 16:10:08,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:10:08,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2024-01-31 16:10:08,032 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:10:08,127 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:10:08,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 177 transitions, 382 flow [2024-01-31 16:10:08,193 INFO L124 PetriNetUnfolderBase]: 10/173 cut-off events. [2024-01-31 16:10:08,193 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:10:08,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 173 events. 10/173 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2024-01-31 16:10:08,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 177 transitions, 382 flow [2024-01-31 16:10:08,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 368 flow [2024-01-31 16:10:08,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:10:08,214 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5de696e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:10:08,214 INFO L358 AbstractCegarLoop]: Starting to check reachability of 137 error locations. [2024-01-31 16:10:08,216 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:10:08,216 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:10:08,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:08,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:08,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:10:08,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:08,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash 36834, now seen corresponding path program 1 times [2024-01-31 16:10:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:08,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563358609] [2024-01-31 16:10:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:08,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:08,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563358609] [2024-01-31 16:10:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563358609] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:08,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:08,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170961699] [2024-01-31 16:10:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:08,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:08,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 177 [2024-01-31 16:10:08,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:08,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:08,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 177 [2024-01-31 16:10:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:13,013 INFO L124 PetriNetUnfolderBase]: 27477/41126 cut-off events. [2024-01-31 16:10:13,013 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-01-31 16:10:13,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78282 conditions, 41126 events. 27477/41126 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343440 event pairs, 23377 based on Foata normal form. 4098/26599 useless extension candidates. Maximal degree in co-relation 69648. Up to 35731 conditions per place. [2024-01-31 16:10:13,339 INFO L140 encePairwiseOnDemand]: 150/177 looper letters, 90 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-01-31 16:10:13,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 147 transitions, 502 flow [2024-01-31 16:10:13,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2024-01-31 16:10:13,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5536723163841808 [2024-01-31 16:10:13,355 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 368 flow. Second operand 3 states and 294 transitions. [2024-01-31 16:10:13,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 147 transitions, 502 flow [2024-01-31 16:10:13,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 147 transitions, 486 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:10:13,408 INFO L231 Difference]: Finished difference. Result has 148 places, 147 transitions, 306 flow [2024-01-31 16:10:13,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=148, PETRI_TRANSITIONS=147} [2024-01-31 16:10:13,412 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -27 predicate places. [2024-01-31 16:10:13,413 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 147 transitions, 306 flow [2024-01-31 16:10:13,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:13,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:13,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-31 16:10:13,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:10:13,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:13,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1142994, now seen corresponding path program 1 times [2024-01-31 16:10:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:13,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143413175] [2024-01-31 16:10:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:13,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143413175] [2024-01-31 16:10:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143413175] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:13,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:13,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376500100] [2024-01-31 16:10:13,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:13,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:13,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:13,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 177 [2024-01-31 16:10:13,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 147 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:13,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:13,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 177 [2024-01-31 16:10:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:17,148 INFO L124 PetriNetUnfolderBase]: 27477/41125 cut-off events. [2024-01-31 16:10:17,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:17,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77309 conditions, 41125 events. 27477/41125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343048 event pairs, 23377 based on Foata normal form. 0/22501 useless extension candidates. Maximal degree in co-relation 77300. Up to 35729 conditions per place. [2024-01-31 16:10:17,410 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 89 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-01-31 16:10:17,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 146 transitions, 486 flow [2024-01-31 16:10:17,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2024-01-31 16:10:17,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512241054613936 [2024-01-31 16:10:17,413 INFO L175 Difference]: Start difference. First operand has 148 places, 147 transitions, 306 flow. Second operand 3 states and 272 transitions. [2024-01-31 16:10:17,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 146 transitions, 486 flow [2024-01-31 16:10:17,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 146 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:10:17,417 INFO L231 Difference]: Finished difference. Result has 147 places, 146 transitions, 304 flow [2024-01-31 16:10:17,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=147, PETRI_TRANSITIONS=146} [2024-01-31 16:10:17,418 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -28 predicate places. [2024-01-31 16:10:17,418 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 146 transitions, 304 flow [2024-01-31 16:10:17,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:17,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:17,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-31 16:10:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:10:17,419 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:17,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash 35434026, now seen corresponding path program 1 times [2024-01-31 16:10:17,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:17,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339599668] [2024-01-31 16:10:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:17,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:17,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:17,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339599668] [2024-01-31 16:10:17,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339599668] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:17,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:17,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:17,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703208382] [2024-01-31 16:10:17,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:17,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:17,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 177 [2024-01-31 16:10:17,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 146 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:17,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:17,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 177 [2024-01-31 16:10:17,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:20,869 INFO L124 PetriNetUnfolderBase]: 27477/41124 cut-off events. [2024-01-31 16:10:20,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:20,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77306 conditions, 41124 events. 27477/41124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 342884 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77295. Up to 35726 conditions per place. [2024-01-31 16:10:21,116 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 87 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2024-01-31 16:10:21,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 145 transitions, 480 flow [2024-01-31 16:10:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-01-31 16:10:21,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519774011299435 [2024-01-31 16:10:21,118 INFO L175 Difference]: Start difference. First operand has 147 places, 146 transitions, 304 flow. Second operand 3 states and 276 transitions. [2024-01-31 16:10:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 145 transitions, 480 flow [2024-01-31 16:10:21,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:10:21,120 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 302 flow [2024-01-31 16:10:21,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2024-01-31 16:10:21,121 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -29 predicate places. [2024-01-31 16:10:21,121 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 302 flow [2024-01-31 16:10:21,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:21,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:21,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:10:21,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:10:21,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:21,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1098456002, now seen corresponding path program 1 times [2024-01-31 16:10:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640771833] [2024-01-31 16:10:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640771833] [2024-01-31 16:10:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640771833] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:21,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:21,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206176962] [2024-01-31 16:10:21,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:21,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:21,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:21,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:21,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 177 [2024-01-31 16:10:21,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 145 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:21,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:21,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 177 [2024-01-31 16:10:21,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:24,664 INFO L124 PetriNetUnfolderBase]: 27477/41123 cut-off events. [2024-01-31 16:10:24,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77304 conditions, 41123 events. 27477/41123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343181 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77291. Up to 35724 conditions per place. [2024-01-31 16:10:24,925 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 86 selfloop transitions, 2 changer transitions 0/144 dead transitions. [2024-01-31 16:10:24,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 144 transitions, 476 flow [2024-01-31 16:10:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-01-31 16:10:24,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235404896421846 [2024-01-31 16:10:24,927 INFO L175 Difference]: Start difference. First operand has 146 places, 145 transitions, 302 flow. Second operand 3 states and 278 transitions. [2024-01-31 16:10:24,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 144 transitions, 476 flow [2024-01-31 16:10:24,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 472 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:10:24,929 INFO L231 Difference]: Finished difference. Result has 145 places, 144 transitions, 300 flow [2024-01-31 16:10:24,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=145, PETRI_TRANSITIONS=144} [2024-01-31 16:10:24,930 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -30 predicate places. [2024-01-31 16:10:24,930 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 144 transitions, 300 flow [2024-01-31 16:10:24,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:24,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:24,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:10:24,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:10:24,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:24,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:24,931 INFO L85 PathProgramCache]: Analyzing trace with hash -307601031, now seen corresponding path program 1 times [2024-01-31 16:10:24,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:24,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011586631] [2024-01-31 16:10:24,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:24,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:25,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011586631] [2024-01-31 16:10:25,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011586631] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:25,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:25,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947564366] [2024-01-31 16:10:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:25,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:25,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 177 [2024-01-31 16:10:25,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 144 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:25,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:25,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 177 [2024-01-31 16:10:25,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:28,574 INFO L124 PetriNetUnfolderBase]: 27477/41122 cut-off events. [2024-01-31 16:10:28,575 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:28,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77302 conditions, 41122 events. 27477/41122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343209 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77287. Up to 35722 conditions per place. [2024-01-31 16:10:28,798 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 85 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-01-31 16:10:28,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 472 flow [2024-01-31 16:10:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-01-31 16:10:28,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527306967984934 [2024-01-31 16:10:28,805 INFO L175 Difference]: Start difference. First operand has 145 places, 144 transitions, 300 flow. Second operand 3 states and 280 transitions. [2024-01-31 16:10:28,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 472 flow [2024-01-31 16:10:28,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:10:28,808 INFO L231 Difference]: Finished difference. Result has 144 places, 143 transitions, 298 flow [2024-01-31 16:10:28,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=144, PETRI_TRANSITIONS=143} [2024-01-31 16:10:28,812 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -31 predicate places. [2024-01-31 16:10:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 143 transitions, 298 flow [2024-01-31 16:10:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:10:28,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:10:28,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:28,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash -945696190, now seen corresponding path program 1 times [2024-01-31 16:10:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322352745] [2024-01-31 16:10:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:28,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322352745] [2024-01-31 16:10:28,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322352745] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:28,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:28,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:28,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565229366] [2024-01-31 16:10:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:28,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:28,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 177 [2024-01-31 16:10:28,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 143 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:28,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:28,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 177 [2024-01-31 16:10:28,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:32,418 INFO L124 PetriNetUnfolderBase]: 27477/41121 cut-off events. [2024-01-31 16:10:32,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:32,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77300 conditions, 41121 events. 27477/41121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343506 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77283. Up to 35720 conditions per place. [2024-01-31 16:10:32,636 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 84 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-01-31 16:10:32,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 142 transitions, 468 flow [2024-01-31 16:10:32,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2024-01-31 16:10:32,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310734463276836 [2024-01-31 16:10:32,637 INFO L175 Difference]: Start difference. First operand has 144 places, 143 transitions, 298 flow. Second operand 3 states and 282 transitions. [2024-01-31 16:10:32,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 142 transitions, 468 flow [2024-01-31 16:10:32,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:10:32,639 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 296 flow [2024-01-31 16:10:32,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2024-01-31 16:10:32,642 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -32 predicate places. [2024-01-31 16:10:32,642 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 296 flow [2024-01-31 16:10:32,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:32,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:32,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:10:32,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:10:32,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:32,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:32,643 INFO L85 PathProgramCache]: Analyzing trace with hash 748190442, now seen corresponding path program 1 times [2024-01-31 16:10:32,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558817147] [2024-01-31 16:10:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:32,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:32,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558817147] [2024-01-31 16:10:32,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558817147] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:32,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:32,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:32,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004413356] [2024-01-31 16:10:32,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:32,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:32,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:32,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:32,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:32,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 177 [2024-01-31 16:10:32,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:32,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:32,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 177 [2024-01-31 16:10:32,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:10:36,015 INFO L124 PetriNetUnfolderBase]: 27477/41120 cut-off events. [2024-01-31 16:10:36,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:10:36,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77298 conditions, 41120 events. 27477/41120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2393. Compared 343487 event pairs, 23377 based on Foata normal form. 0/22502 useless extension candidates. Maximal degree in co-relation 77279. Up to 35718 conditions per place. [2024-01-31 16:10:36,288 INFO L140 encePairwiseOnDemand]: 174/177 looper letters, 83 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-01-31 16:10:36,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 141 transitions, 464 flow [2024-01-31 16:10:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:10:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:10:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2024-01-31 16:10:36,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5348399246704332 [2024-01-31 16:10:36,290 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 296 flow. Second operand 3 states and 284 transitions. [2024-01-31 16:10:36,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 141 transitions, 464 flow [2024-01-31 16:10:36,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:10:36,292 INFO L231 Difference]: Finished difference. Result has 142 places, 141 transitions, 294 flow [2024-01-31 16:10:36,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=177, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=142, PETRI_TRANSITIONS=141} [2024-01-31 16:10:36,293 INFO L281 CegarLoopForPetriNet]: 175 programPoint places, -33 predicate places. [2024-01-31 16:10:36,293 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 141 transitions, 294 flow [2024-01-31 16:10:36,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:36,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:10:36,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:10:36,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:10:36,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 134 more)] === [2024-01-31 16:10:36,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:10:36,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1719068384, now seen corresponding path program 1 times [2024-01-31 16:10:36,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:10:36,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019311982] [2024-01-31 16:10:36,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:10:36,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:10:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:10:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:10:36,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:10:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019311982] [2024-01-31 16:10:36,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019311982] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:10:36,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:10:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:10:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595013080] [2024-01-31 16:10:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:10:36,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:10:36,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:10:36,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:10:36,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:10:36,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 177 [2024-01-31 16:10:36,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 141 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:10:36,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:10:36,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 177 [2024-01-31 16:10:36,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand